package com.zhb.blog.web.admin;

import com.zhb.blog.model.Type;
import com.zhb.blog.service.TypeService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Sort;
import org.springframework.data.web.PageableDefault;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

@Controller
@RequestMapping("/admin")
public class TypeController {
    @Autowired
    private TypeService typeService;


    @GetMapping("/types")
    public String types(@PageableDefault(size = 5,sort = {"id"},direction = Sort.Direction.DESC)
                                    Pageable pageable,Model model){
        model.addAttribute("page",typeService.listType(pageable));
        return "admin/types";
    }
    @PostMapping("/types")
    public String post(Type type, BindingResult result, RedirectAttributes attributes){
        Type t1 = typeService.getTypeByName(type.getName());
        if(t1 != null){
            result.rejectValue("name","nameError","不能添加重复的分类");
        }
        if(result.hasErrors()){
            return "admin/types-input";
        }
        Type t =  typeService.saveType(type);
        if(t == null){
            attributes.addFlashAttribute("msg","添加失败");
        }else{
            attributes.addFlashAttribute("msg","添加成功");
        }
        return "redirect:/admin/types";
    }
    @GetMapping("/types/input")
    public String input(Model model){
        model.addAttribute("type",new Type());//传给前端，防止报错
        return "admin/types-input";
    }
    @GetMapping("/types/{id}/input")
    public String editInput(@PathVariable Long id, Model model){
        model.addAttribute("type",typeService.getType(id));

        return "admin/types-input";
    }
    @GetMapping("/types/{id}/delete")
    public String delete(@PathVariable Long id,RedirectAttributes attributes){
        typeService.deleteType(id);
        attributes.addFlashAttribute("msg","删除成功");
        return "redirect:/admin/types";
    }
    @PostMapping("/types/{id}")
    public String editPost(Type type, BindingResult result,@PathVariable Long id, RedirectAttributes attributes){
        Type t1 = typeService.getTypeByName(type.getName());
        if(t1 != null){
            result.rejectValue("name","nameError","不能添加重复的分类");
        }
        if(result.hasErrors()){
            return "admin/types-input";
        }
        Type t =  typeService.updateType(id,type);

        if(t == null){
            attributes.addFlashAttribute("msg","修改失败");
        }else{
            attributes.addFlashAttribute("msg","修改成功");
        }
        return "redirect:/admin/types";
    }
}
